Limekiln



(No Model.)

C. D. PAGE.

LIMEKILN'.

No. 443,865. l Patented Dec. 30, 1890.

we mams ramas co., mmmmm., maman-mn, n. c.

Il'NrrED VSTATES PATENT OFFICE.

CLARK D. PAGE, OF ROCHESTER, NEV YORK.

LIIVIEKILN.

SPECIFICATION forming part of Letters Patent No. 443,865, dated December30, 1890.

Application filed .Tune 30, 1890. Serial No. 357,272. (No model.)

To all whom t may concern:

Be it known that I, CLARK D. PAGE, of the city of Rochester, county ofMonroe, and State of New York, have invented certain new and usefulImprovementsin Limekilns; and I do hereby declare the following to be afull, clear, and exact description of the same, reference being had tothe accompanying drawings, forming a part of this specification, and tothe letters of reference marked thereon.

My present invention relates to limekilns, and has for its object toimprove their construction and operation, consisting in certainnovelties of construction and combinations of parts, all as will behereinafter fully described, and the novel features pointed out in theclaims at-the end of this specification.

In the accompanying drawings, Figure 1 is a vertical section of a kilnconstructed in accordance with my invention; Fig. 2, a horizontalsection on the line x @c of Fig. l; Fig. 3, a vertical section on theline y y of Fig. 2; Fig. 4, a horizontal sectional view on the line .e zof Fig. l.

Similar letters of reference in the several figures indicate similarparts.

The walls A A of the present limekiln are constructed of masonry in theordinary manner, and the interior of the cupola is provided with alining C of fire-brick, as usual. The cupola is made, preferably, ofslightly-tapering form, being largest at the furnaces, which latter inthe present construction are two in number, (indicated by D 1),)arranged on opposite sides and tapering toward the outside. The innerends of the furnaces are provided with centrally-disposed triangular orwedgeshaped columns or abutments E of fire-brick. The furnaces arepreferably formed with grate-openings e in their bottoms, communieatingwith the ash-pit E; but I propose in my present construction to use aspray of some suitable hydrocarbon instead of coal, and therefore preferto close this grate-opening with a valve or door E, capable of beingopened, when desired, to permit any accumulation of lime in the furnaceor combustionchamber to drop into the ash-pit, from whence it may beremoved, when desired, by closing door E', thus preventing an unduequantity of air reaching the furnaceduring the operation. If desired todispense with the atomd izer or spraying devices, the usual grate couldbe placed in the opening e and solid fuel used in the furnaces.

The cupola just below the furnaces is divided into four sections bywalls F', supported on arches strong enough to support the charge oflime and unburned stone in the kiln, and the upper sides of these wallsare provided with coping-blocks G and G', of firebrick or otherrefractory material, connected at the center by a large conical block H,of refractory material, having in its sides recesses, into which theends of t-he copingblocks enter and by which they are held in place. Thetwo blocks G, arranged at right angles lto the furnaces, are preferablyhigher than the others, extending, preferably, above the centers of thefurnaces and constituting a partition, preventing theproducts frompassing from one furnace to the other, and also, in connection with thecentral cone H, forming a solid support for the lime and stone andpermitting the flame from the furnace to reach farther in and under it.This bridging and supporting are particularly due to the central cone,which I regard'as a very advantageous feature.

Below the furnaces the cupola is enlarged, as at J, to form acooling andreceiving chamber or draw-pit, it being contracted again at the bottomand provided with a partition-Wall J', which serves to support to someextent the burned and cooled lime and render the removal casier.

IVhile the kiln, so far described, is adapted for the use of any kind offuel, I prefer to employ ahyd rocarbon-burner of any approved kind andto atomize or spray it into the combustionchamber by a steam-atomizer.In the drawings, the letter K designates a suitable atomizer arrangedwithin each of the furnaces adapted to project a burning spray of oiland steam mixed with a suitable quantity of air to support combustionagainst the Wedge-shaped abutments E, which will cause it to divide andentering the cupola burn the fuel and limestone therein contained, thecopings G and G preventing the flames from one entering the otherfurnace and directing them upward. -v

The boiler L for generating the steam operating the atomizers ormachinery, if de.

IOO

sii-ed, I prefer to locate Within the cupola below the furnaces, asshown, and in such position that While it will not be subjected to theWeight of the contents ot the kiln it will be subjected te the action otthe White-hot lime belouT the furnaces and supportiIig-arches, and thusthe heat given oi't while the lime is cooling will be utilized. Thismanner of loeating the boiler in position to be heated by the limecoming from the hottest part of the kiln effects a saving` in fuel andis a vast improvement over locating it Where a portion of the directheat from the furnaces is taken to heat the boiler. As the boilerextends transverselythrough the cupola, I prefer to extend thesteam-pipes m m :from opposite ends thereof to the respective atomizers,though any other arrangen'ient could as well be had-as, for instance, ifagreater number ot' furnaces or atomizers are employed the Water issupplied to the boiler through pipe n and the oil to the atomizers bypipe o.

Suitable apertures p are provided opening into the cupola for theinsertion oi bars or pokers with which to knock the aecumulations oflime from the arches or boiler and to bring the lime down should therebe a tendency to bridge.

The manner of charging and burning kilns of this class is so wellunderstood by those skilled in the art that no `further description isdeemed necessary.

l. In a lirncliiln, the con'ibination, with the cupola, of acombustion-chamber having a wedge-shaped abutment in its discharge cudand a hydrocarbon atomizer discharging against the edgeof said abutment,substantially as described.

2. In a limeliiln, the combination, with the cupola, of acombustionchamber having a hydrocarbon-atomizer therein, adischargeopening in its lower side, and a door or Valve for closing saidaperture, adapted to be opened when desired, substantially as described.

3. In a limekiln, the combination, with the cupola and the furnaces atthe sides thereof, of a steam-boiler within the cupola, located belen7said furnaces an d heated by the burned lime, liydrocarbon-atomizerslocated in the furnaces and discharging laterally iu the cupola, andconnections between the boiler and atomizers tor conveying steam to thelatter, substantially as described.

et. In a limekiln, the eombinatioinwith the cupola, ofthe furnaces, thedivision-Walls having coping-blocks G G', the former being the higherand arranged at an angle to the furnace-opening, and the central conc 1Iof refractory material, extending above the furnace-opening,substantially as described.

5. In a limelriln, the combination,with the cupola and furnace, ot' atransverse division wall or arch extending below the furnace, and asteam-boiler extending transversely of the cupola beneath the arch,substantially as dcscribed.

CLARK l). PAGE.

Witnesses:

FRED F. (li-inscri', II. L. Osooon.

